Agustsson Gallery — "Hidden Colors," sculpture exhibition featuring the 4,000-yearold anagama techique that, literally, pulls "Hidden Colors of Earth" to form a natural patina with a feeling as ancient as the process itself. Through Feb. 24, 176 Broadway, Kingston. Also: Magnus Agustsson presents his Large Scale Chess Set on an almost 6-foot custom table. Each piece is individually sculpted and stands almost 1 foot tall. Works by others also are exhibited, Hours 11 a.m.-5 p.m. daily. 331-1388.

Arts Society of Kingston — "Down the Garden Path," works by members, and "A Light in the Dark," showcase of local high school darkroom photography, through Feb. 28, 97 Broadway, Kingston. Hours 1-6 p.m. Tues.-Sat. and by appointment. 338-0331. askforarts.org.

GCCA Catskill Gallery — "Visitors, Visitations, Visions" combines sci-fi, fantasy and whimsy in a group show of works in all media by 17 Hudson Valley artists, through March 9, 398 Main St., Catskill. Hours 10 a.m.-5 p.m. Mon.-Sat. 518-943-3400. greenearts.org.

Karpeles Manuscript Library Museum — "Spiritualism," documents and manuscript materials from both Sir Arthur Conan Doyle and Harry Houdini on both sides of the issue of spiritualism, including material on seances, magic, and the opposing beliefs of the two men, through April 28. 94 Broadway, Newburgh. Also: "Up Close and Personal," works by F.T. Mitchell, through April 28. Hours 10 a.m.-4 p.m. Thurs.-Sat., noon-4 p.m. Sun. Free admission. 569-4997. karpeles.com.

Orange County Firefighters Museum — Museum chronicles history of firefighting in Orange County and houses a collection of firefighting equipment and memorabilia. It offers tours, exhibits, a fire safety education center, and presentations. 141 Clinton St., Montgomery, 1 p.m. Sat. Free, but donations are welcome. 457-9654.

Peekskill Coffee House — Works by students of Peekskill High School and Middle School, through Feb. 28, 101 S. Division St., Peekskill. Call for hours: 914-739-1287. peekskillcoffee.com.

Ramapo College — "It's the End of the World as We Know it (and I Feel Fine)," environmental-themed works by 14 artists, Kresge & Pascal Galleries, and landscapes by Gabriel Tempesta, Pascal Gallery, both through March 6, Berrie Center, 505 Ramapo Valley Road, Mahwah, N.J. Hours 1-5 p.m. Tues., Thurs. and Fri. and 1-7 p.m. Wed. 201-684-7844. ramapo.edu.

Washington's Headquarters State Historic Site — "Unpacked & Rediscovered: Selections From Washington's Headquarters' Collection," 84 Liberty St., Newburgh. New exhibit features more than 1,300 rare, curious, and important objects not seen by the public for many years. Admission $4, $3 senior citizens and students age 13 and older, free age 12 and younger. Hours 10 a.m.-3 p.m. Thurs.-Sat. 562-1195. facebook.com/washingtonsheadquarters.